6.6205.1 Manufactured Housing Exhaust-Only Strategies

Topic: 
Whole Building Ventilation
Subtopic: 
Exhaust-Only System
Desired Outcome: 
Provide primary ventilation for common spaces
TitleSpecification(s)Objective(s)
6.6205.1a
Assessment

Assessment will be done using ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2 standard:

  • Blower door test
  • Fan flow measurements
  • Calculations

Determine the ventilation needs of the whole house
6.6205.1b
Selection

Fan type will be capable of continuous operation and selected in accordance with ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2 for:

  • Sizing
  • Climate considerations
  • Control strategy
  • Sone rating
  • Durability

Fan will be ENERGY STAR qualified

Determine proper fan selection

Minimize energy consumption during fan operation
6.6205.1c
Location

No resistance greater than 3 pascals will exist between fan intake location with reference to the common area 

Ensure fresh air distribution to common areas
6.6205.1d
Climate considerations

ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2 will be referenced for climate considerations

Whole house mechanical net exhaust flow for hot-humid climate will not exceed 7.5 cubic feet per minute/100 square feet

Maintain building durability

Protect occupant health
6.6205.1e
Combustion Appliance Zone ( CAZ CAZ Combustion appliance zone ) testing

CAZ CAZ Combustion appliance zone test will be performed where combustion appliances are utilized, where applicable

Identify possible conditions that can cause unsafe equipment operating conditions
6.6205.1f
Occupant education

Occupant will be educated on:

  • Purpose of the ventilation system
  • Proper operation and use of controls
  • Cost and benefit of system
  • Manual shut off

A label indicating the presence and purpose of the ventilation system will be included or a copy of the system operation guide will be posted at the electrical panel

Operation guide or label will be permanently attached and in full sight

Ensure occupant is educated on the safe and efficient operation of the system

Deliver intended air exchange
6.6205.1g
Total exhaust airflow

Total exhaust system airflow will be measured

Ensure exhaust airflow is as designed